fix linting errors and add linter as CI check

Signed-off-by: Jorge Turrado <jorge.turrado@scrm.lidl>

.github/workflows/ci.yml

@@ -28,10 +28,10 @@ jobs:
         run: |
           go version
           pwd && ls -l
-          
+
           go install go.k6.io/xk6/cmd/xk6@latest
           MODULE_NAME=$(go list -m)
-          
+
           xk6 build \
             --output ./k6ext \
             --with $MODULE_NAME="."
@@ -72,3 +72,23 @@ jobs:
           which go
           go version
           go test -race -timeout 60s ./...
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Install Go
+        uses: actions/setup-go@v3
+        with:
+          go-version: 1.20.x
+      - name: Retrieve golangci-lint version
+        run: |
+          echo "Version=$(head -n 1 "${GITHUB_WORKSPACE}/.golangci.yml" | tr -d '# ')" >> $GITHUB_OUTPUT
+        id: version
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v3
+        with:
+          version: ${{ steps.version.outputs.Version }}
+          only-new-issues: true

kubernetes.go

@@ -19,7 +19,6 @@ import (
 	"k8s.io/client-go/dynamic"
 	"k8s.io/client-go/kubernetes"
 	_ "k8s.io/client-go/plugin/pkg/client/auth" // Required for access to GKE and AKS
-	restclient "k8s.io/client-go/rest"
 	"k8s.io/client-go/tools/clientcmd"
 	"k8s.io/client-go/util/homedir"
 )
@@ -149,7 +148,7 @@ func getClientConfig(options KubeConfig) (*rest.Config, error) {
 	kubeconfig := options.ConfigPath
 	if kubeconfig == "" {
 		// are we in-cluster?
-		config, err := restclient.InClusterConfig()
+		config, err := rest.InClusterConfig()
 		if err == nil {
 			return config, nil
 		}